A4 B5 1998 - Concert H/U replaced - BUT...
#1
A4 B5 1998 - Concert H/U replaced - BUT...
OK SO... i bought a new H/U for my car. I made a "key" from a piece of flat hard plastic found on some sign i had laying in the garage.
Checked the Pin assignments on the back of the Concert and unplugged, Then i used a multimeter to test power on and power on with ign. off. Then checked for speaker operation. I plugged new loom ends, which were soldered, straight into the original loom. Then i hot glued them in place. I found that the yellow plug with six points, for rear powered speakers, needed a power to the left center pin so i ran this and then plugged the new radio in - WAHLAH!!! Everything worked.
AHHHH BUT... with it being Xmas i couldn't find the trim for the gaps in the dash (will get them shortly) and i couldn't find an aerial adapter. NO Sweat - the MAIN reason i got the new H/U is to play MP3s and my music DVDs - radio is not a major issue for a few days.
BUT (again) even during DVD/CD/MP3 i get engine static when it is running. Is there something i missed? I "fashioned" a make-shift aerial adaptor which works. Now even with this in or out i get "buzz". Ok so there was a ground plugged to the concert body which had no place to go on the new unit. SO i tested with it against the new body and earthed - no difference.
Any ideas? Thanks in advance.
Checked the Pin assignments on the back of the Concert and unplugged, Then i used a multimeter to test power on and power on with ign. off. Then checked for speaker operation. I plugged new loom ends, which were soldered, straight into the original loom. Then i hot glued them in place. I found that the yellow plug with six points, for rear powered speakers, needed a power to the left center pin so i ran this and then plugged the new radio in - WAHLAH!!! Everything worked.
AHHHH BUT... with it being Xmas i couldn't find the trim for the gaps in the dash (will get them shortly) and i couldn't find an aerial adapter. NO Sweat - the MAIN reason i got the new H/U is to play MP3s and my music DVDs - radio is not a major issue for a few days.
BUT (again) even during DVD/CD/MP3 i get engine static when it is running. Is there something i missed? I "fashioned" a make-shift aerial adaptor which works. Now even with this in or out i get "buzz". Ok so there was a ground plugged to the concert body which had no place to go on the new unit. SO i tested with it against the new body and earthed - no difference.
Any ideas? Thanks in advance.
#2
Well all sorted now. I have the trim in the dash and got the aerial adapter. PERFECT!!
So what about the static "buzz"? Ok that is also sorted. On the yellow plug with 6 points - for rear speakers - i didn't put the earth for the speakers in. I initially only plugged in positive and they worked - SO, i assumed the car had a common speaker negative so I didn't fuss.
While fitting the trim and adapter yesterday i thought while i am finalizing the H/U install let me put the speaker negatives where they should go and the static buzz is now gone.
So what about the static "buzz"? Ok that is also sorted. On the yellow plug with 6 points - for rear speakers - i didn't put the earth for the speakers in. I initially only plugged in positive and they worked - SO, i assumed the car had a common speaker negative so I didn't fuss.
While fitting the trim and adapter yesterday i thought while i am finalizing the H/U install let me put the speaker negatives where they should go and the static buzz is now gone.
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